Abstract
This paper presents a speech analysis/synthesis model based on periodic-aperiodic decomposition. In presented approach, decomposition is performed in whole speech band without making identification of voiced/unvoiced regions. Other important feature is pitch-tracking ability of decomposition algorithm. For this purpose a new pitch-tracking transformation called Time-Varying Discrete Fourier Transform (TVDFT) is employed. Periodic component is modelled as a sum of pitch harmonics with amplitudes and phases estimated with TVDFT. Aperiodic component is defined as a difference between original speech signal and synthesised periodic component. TVDFT needs accurate fundamental pitch estimation. This paper also presents a robust pitch estimation.. Experimental results showing advantages of suggested model are also given.
This work was supported by Bialystok Technical University under the grant W/WI/2/04
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Zubrycki, P., Petrovsky, A.A. (2005). Analysis/Synthesis Speech Model Based on the Pitch-Tracking Periodic-Aperiodic Decomposition. In: Saeed, K., Pejaś, J. (eds) Information Processing and Security Systems. Springer, Boston, MA. https://doi.org/10.1007/0-387-26325-X_4
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DOI: https://doi.org/10.1007/0-387-26325-X_4
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